$list-border-direction: (
    left: left,
    right: right,
    top: top,
    bottom: bottom,
);
$list-border-style: (
    dashed: dashed,
    dotted: dotted,
    double: double,
);

$radius: (
    circle: 50%,
    none: none,
);

/* 边框圆角*/
@each $key, $value in $radius {
    .border-#{$key} {
        border-radius: $value;
    }
}

/* 圆角 */
@for $var from 0 to 17 {
    .border-#{$var * 2} {
        border-radius: #{$var * 2}px;
    }
}
